Miniaturized Planar Ultra-Wideband Bandpass Filter with Notched Band

Xueying Guo, Yunsheng Xu, Weidong Wang

Key Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China, Hefei, China.

DOI: 10.4236/jcc.2015.33017                

Abstract

This paper presents a planar ultra-wideband (UWB) bandpass filter with sharp out-of-band rejection performance. The filter is formed by a folded multiple-mode resonator to realize high performance in an operation band from 3.3 to 10 GHz with a very compact size of 20 mm × 20 mm × 0.5 mm. An extra notched band centered at 5.8 GHz is further accomplished by etching a Hilbert fractal curve slit on the filter without the necessity of readjusting the geometrical parameters. The simulated and measured results are in good agreement.

Keywords

Ultra-Wideband (UWB), Bandpass Filter, Notched Band, Hilbert Fractal Curve

Conflicts of Interest

The authors declare no conflicts of interest.

References

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